Isanduku ya terefone igendanwa ni ubwoko bwa voltage nini cyane, gukwirakwiza imashini hamwe nogukwirakwiza amashanyarazi make, ibyo bikaba byarateguwe ibikoresho byo gukwirakwiza amashanyarazi mu nzu no hanze hanze mu ruganda hakurikijwe gahunda runaka.Imikorere ihuriweho kandi igashyirwa mubushuhe butarimo ubushuhe, butagira ingese, butagira umukungugu, bwangiza imbeba, butarinda umuriro, burwanya ubujura, butanga ubushyuhe, bwuzuye, bwuzuye ibyuma, byimuka byimuka, cyane cyane bibereye mumijyi kubaka umuyoboro no kuvugurura, kandi niwo mwanya wa kabiri munini wa gisivili.Ubwoko bushya bwo gusimbuza bwazamutse kuva icyo gihe.Isanduku yubwoko bwibisanduku ikwiranye na mine, inganda, peteroli na gaze hamwe na sitasiyo yumuriro.